ANDROID: GKI: Added the get_task_pid function

Leaf changes summary: 1 artifact changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 1 Added function
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

1 Added function:

  [A] 'function pid* get_task_pid(task_struct*, pid_type)'

Bug: 175037520
Signed-off-by: linjoey <linjoey@google.com>
Change-Id: Ibe049a10ec588b4b7b0c601f22499b40c16c0bda